Relier Pairs DC500 Test 2Version en ligne Error Causes and Prevention par Ricky Tuari 1 Echo 2 Impulse Noise 3 White Noise 4 Attenuation 5 Datalink Layer 6 Transport Layer 7 Network Layer 8 Inter modulation noise 9 Cross-Talk TCP, UDP, DCCP,... Cause: Multiplexer guard bands are too small or wires too close together. Prevention: Increase the guard bands or move or shield the wires. Cause: Gradual decrease in signal over distance (weakening of a signal) Prevention: Use repeaters or amplifiers Cause: Movement of electrons (Thermal Energy) Prevention: Increase Signal Strength (Increase SNR) IPv4, IPv6, IPsec, ARP, RARP,... 802.11, ATM, Ethernet, FDDI, PPP, L2TP,... Cause: Poor connections (causing signal to be reflected back to the source) Prevention: Fix the connections, or tune equipment. Cause: Signals from several circuits combine. Prevention: Move or shield the wires. Cause: Sudden increase in electricity Prevention: Shield or move the wires
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